Shade-roller



(No Model.)

B. RHART SHORN' SHADE ROLLER.

No. 515 218. Patnted Feb. 20,1894.

'I'NE'NATIONAL LITHDGRAPHING COMPANY.

wnsnmerou. a u.

ing device.

' .tjrmrn star s EDMUND F. HARTSHORN, OF NEl/VARK, NEW JERSEY, ASSIGNOR TO THE STEWART HARTSHORN COMPANY, OF NEW JERSEY.

SHADE-ROLLER.

SPECIFICATION forming part of Letters Patent No. 515,218, dated February 20, 1894.

Application filed June 10, 1891.

To 00% whom it may concern.-

Be it known that I, EDMUND F. HARTSHORN, a citizen of the United States, and a resident of Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Shade-Rollers, of which the following is a specification.

My invention relates to metallic rollers 01" those constructed of sheet metal; and to that class of rollers formed in parts or sections which slide within each other to adjust the rollers to different lengths.

In the drawings, Figure 1 is a detached View of a metallic roller containing my improvement. Fig. 2 is a view of the roller put together and secured by my improved fastening. Fig. 3 is a sectional view of the roller through the line m m, Fig. 2, showing the inner tube in elevation. Fig. 4 shows the method of securing the section by my fasten- Figs. 5 and 6 are modifications of my improved constructions.

In the metallic sectional rollers heretofore constructed the sections are apt to slip or turn on one another, and much difficulty is experienced in making the roller firm and rigid so as to operate in a satisfactory manner. My improvement is intended to overcome this difficulty and produce a sectional roller that will be as firm and rigid as one made in a single piece.

In the drawings, a a are the two sections of the roller, and bis the extension tube which is connected to a and slides within the section a.

c o is the groove formed in the roller in which the shade is secured to the latter. The extension tube b is made slightly smaller than the outer tube so as to fit tightly in the latter and slide therein; and may be a complete closed tube soldered all the way along its joint; or the tube may be open and unsoldered for its whole length from where it is joined to the outer section a, as shown in Fig. 1, and in section in Figs. 3, 5 and 6, it being immaterial whether the tube is unsoldered and open or not, as it is formed to fit the outer tube tightly and yet slide back and forth in the latter. The groove 0 in the extension tube is made about the exact form and contour of the groove 0 in the outer sec- Serial No. 395,754. (No model.)

tions, so that when the sections are together the groove 0 in the extension tube will closely surround and inclose the groove 0 in the outer section as shown in Fig. 3. This groove, which is preferably of the form shown in the drawings, has the shoulders d d on each side, and as the shoulders d of the groove 0 of the inner tube bear against those of the groove in the outer section, the two sections are held rigidly together, and it is impossible for the inner extension tube to turn round within the outer tube in either direction. The groove in both sections is thus always held in line.

The groove in my improvement is formed on a mandrel, and need not be at the edge of the roller, or .near the joint, as it in no way assists in forming the joint or in securing the lap-over edges of the roller, but the joint may be anywhere on the tube with respect to the groove, as shown in Figs. 5 and 6. In my improvement therefore, as the groove 0 is constructed with a shoulder on both sides, and as the groove in the extension tube is made the exact shape of the groove in the outer sections, it follows that when together the two grooves will fit each other closely, and the two sections of the roller will be kept from turning on each other, and the groove, and hence the shade, secured in the same, is always maintained in a straight line.

To hold the two sections from sliding together after the length of the roller is adj usted, I employ the device shown at hin the drawings. This consists of a narrow strip of metal, preferably thin tin, which is soldered or otherwise fastened at the outer end of the extension tube, as at h, and extends along the tube to the outer section a. The strip is fastened only at the end h, and is free and detached for the restof its length. When the extension tube 5 has been slid the required distance into the outer section a and it is desired to fasten the two sections, the strip his bent back over the edge of the outer tube so as to lie along the outside of the latter, as will be understood from Figs. 4 and 2, and the two sections are effectually prevented from sliding any farther into each other. As the metal strip is very thin, it does not interfere with the extension tube sliding into the outer tube, and lies closely against the roller when turned back and at the same time itis stiff and firm enough to hold the two sections in place.

What I claim is 1. In an extension roller formed'of an outside and an inside section, the combination with the outside section a and a formed with the longitudinal groove having on each side of its base an upwardly extending shoulder, of the connecting inside section having alongitudinal groove formed by bending a portion of the section down to form a shoulder to bear against one shoulder of the outside section groove, thence transversely to form a base to lie against the base of the outside groove and thence upwardly to form a second shoulder to bear against the othershoulder of the outside groove, the two shoulders and base of the groove to the inside section being in a continuous piece with no break between them, substantially as and for the purposes described.

2. In an extension roller, the combination with an outer tubular section, and an inner into the other section, substantially asand v for the purposes described.

3. An extensible roller, composed of an outside section, and an inside section slidable therein, both sections having corresponding grooves fitting one around the other to prevent the sections from turning on each other, and a metallic strip secured to the inside section and adapted to be bent upon the outside section to form a hook to prevent one sect on sliding in the other, substantially as and for the purposes described.

EDMUND F. HARTSHORN. 

